{"paper":{"title":"Hadronic coupling constants of $g_{\\sigma\\pi\\pi}$ in lattice QCD","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-lat","authors_text":"Hang Chen, Lingyun Wang, Ziwen Fu","submitted_at":"2017-02-27T15:53:43Z","abstract_excerpt":"We investigate the coupling constant $g_{\\sigma\\pi\\pi}$ for the hadronic decay $\\sigma\\to\\pi\\pi$ only using the relevant three-point function, which is evaluated by the moving-wall source technique with a pretty good noise-to-signal ratio. This simulation is carried out on a $40^3\\times96$ MILC gauge configuration with $N_f=2+1$ flavor of the \"Asqtad\" improved staggered dynamical sea quarks at the lattice spacing $a \\approx 0.09$ fm. Our estimated value for this given MILC fine lattice gauge ensemble $g_{\\sigma\\pi\\pi}=2.71(42)$ GeV."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.08337","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}